FR390251A - Improvements in calculating machines - Google Patents

Improvements in calculating machines

Info

Publication number
FR390251A
FR390251A FR390251DA FR390251A FR 390251 A FR390251 A FR 390251A FR 390251D A FR390251D A FR 390251DA FR 390251 A FR390251 A FR 390251A
Authority
FR
France
Prior art keywords
calculating machines
machines
calculating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
William Prehn Quentell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR390251A publication Critical patent/FR390251A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • G06C7/06—Keyboards with one set of keys for each denomination

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
FR390251D 1908-05-12 1908-05-12 Improvements in calculating machines Expired FR390251A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR390251T 1908-05-12

Publications (1)

Publication Number Publication Date
FR390251A true FR390251A (en) 1908-10-01

Family

ID=1435802

Family Applications (1)

Application Number Title Priority Date Filing Date
FR390251D Expired FR390251A (en) 1908-05-12 1908-05-12 Improvements in calculating machines

Country Status (1)

Country Link
FR (1) FR390251A (en)

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